Okay, technically the 189,819-letter IUPAC name of titin, the largest known protein which is responsible for passive elasticity of muscle, is a verbal formula rather than an actual word, but it's dizzying to imagine all those syllables tumbling out of a human mouth. Well, now you don't have to imagine it—provided you can sit through more than three hours of this fellow mumbling his seryls and glutamins.

You can view the entire, hefty verbal formula right here. Although this isn't a single-take video (take a look at what happens to the flowers at 2:09:21), it's an impressive feat of patience. Just think of all the other formulae he could have read out loud in that time.